As the Yahoo! On the Road tour continues, our crew are becoming experts in concert lingo and logistics. For example, if you're not familiar with the term, a concert rider is a contractual list that lays out the technical requirements for a musician's performance — plus a few requested perks. Many are simple, others are tongue-in-cheek, and a few get circulated as delicious examples of artist egos run amok. Here are some of our favorites. -- Vera H-C Chan, Yahoo!